Christian pilgrims pray inside the Grotto of the Church of Nativity, traditionally believed by Christians to be the birthplace of Jesus Christ, in the West Bank town of Bethlehem on Christmas Eve, Thursday, December 24, 2015. (Photo by Majdi Mohammed/AP Photo)





A1C Kenisha R. Robertson, door attendant, closes the doors of a transfer vehicle after the U.S. Air Force carry team placed a transfer case with the remains of fallen Staff Sgt. Chester J. McBride of Statesboro, Georgia, into the vehicle during a dignified transfer at the New Castle Air National Guard Base in New Castle, Delaware, December 23, 2015. McBride was one of the six U.S. troops killed by a suicide bomber near Bagram air base in Afghanistan. (Photo by Doug Curran/Reuters)





A man performs a fire eating act during a street show before Christmas in Baclaran, City of Paranaque, Metro Manila, Philippines December 24, 2015, ahead of Christmas eve celebrations. (Photo by Romeo Ranoco/Reuters)





A woman poses for a picture in front of a Christmas illumination at the Cheonggye stream in central Seoul, South Korea, December 24, 2015. (Photo by Kim Hong-Ji/Reuters)





People carry a coffin with a pig inside, while walking through the lines of law enforcement officers during a protest by farmers and their supporters against possible changes in the state budget and tax regulations in the agricultural sector, currently considered by the authorities, outside the parliament headquarters in Kiev, Ukraine, December 24, 2015. (Photo by Andrew Kravchenko/Reuters)





A boy stands beside replica of the Grand Mosque of Mecca during a procession to mark Eid-e-Milad-ul-Nabi, or birthday celebrations of Prophet Mohammad, in Rawalpindi, Pakistan, December 24, 2015. (Photo by Faisal Mahmood/Reuters)





A Muslim man performs a stunt with fire during a procession to mark Eid-e-Milad-ul-Nabi, or birthday celebrations of Prophet Mohammad, in Ahmedabad, India, December 24, 2015. (Photo by Amit Dave/Reuters)





Ivan Timofeenko, co-founder of “Newton Park”, a private interactive museum of science, dressed as Santa Claus, pours liquid nitrogen, bearing the temperature of about minus 196 degrees Celsius (minus 320.8 degrees Fahrenheit), on the head of visitor Dmitry Shilov during the “Arctic” scientific show for school children at the “Square of Peace” museum centre in the Siberian city of Krasnoyarsk, Russia, December 24, 2015. A group of young engineers, scientists and researchers, who specialize in chemistry, applied mathematics and physics, founded the interactive museum of science to conduct experiments aimed at the popularization of the exact sciences for pupils and their parents. The experiment demonstrated the Leidenfrost effect phenomenon, in which a liquid produces a layer of insulating vapour that prevents the liquid getting into a direct contact with a surface much hotter than the liquid's boiling point, according to organizers. (Photo by Ilya Naymushin/Reuters)





People walk near a giant Christmas ball decorated with festive illumination lights in Manezh square in central Moscow, Russia, December 24, 2015. (Photo by Maxim Zmeyev/Reuters)





Plainclothes policemen react during a protest following a funeral ceremony for Kurdish militants in the southeastern city of Diyarbakir, Turkey, December 24, 2015. (Photo by Sertac Kayar/Reuters)





Belgian soldiers pose for a photograph as they patrol along “Winter Wonders”, a Christmas market on Brussels' Grand Place, Belgium, December 24, 2015, following tight security measures linked to the fatal attacks in Paris. (Photo by Francois Lenoir/Reuters)





Teachers and students react as a butcher (front) cuts the carcass of a pig during a presentation aiming to teach students traditional culture, on the playground of a primary school in Chongqing, China, December 24, 2015. The Chinese characters behind read, “My beautiful childhood”. (Photo by Reuters/Stringer)





Iraqi security forces ride on military vehicles as they advance towards the center of Ramadi city, Iraq, December 24, 2015. (Photo by Reuters/Stringer)





A boy looks on while he attends a gathering marking the birth anniversary of the Prophet Mohammed in Yemen's capital Sanaa, December 24, 2015. The words on his cheek read: “At your order, oh messenger of Allah!”. (Photo by Mohamed al-Sayaghi/Reuters)





A fishmonger holds a giant crab as crowds gather for last minute shopping before Christmas at the Sydney Fish Market on December 24, 2015 in Sydney, Australia. The Sydney Fish Markets experience its busiest trade over the Christmas week including the 36 hour marathon from 5am on the 23rd December until 5pm Christmas Eve. (Photo by Cameron Spencer/Getty Images)





Worshippers and pilgrims gather at the Church of Nativity on December 24, 2015 in Bethlehem, West Bank. Every year thousands of Christian pilgrims travel to the church that marks the site of the cave in which Jesus is said to have been born. (Photo by Ilia Yefimovich/Getty Images)





A girl runs from waves crashing over the promenade on December 24, 2015 in Blackpool, England. The Met Office is warning of 80mph winds and torrential downpours over the Christmas holidays, as dozens of flood alerts are issued for already devastated regions. (Photo by Nigel Roddis/Getty Images)





Traditionally dressed Moroccan men take part in a rally marking 1445th anniversary of the birthday of Islam's Prophet Mohammed known in Arabic as “al-Mawlid al-Nabawi”, in Sale, on December 23, 2015. (Photo by Fadel Senna/AFP Photo)





Kashmiri Muslim devotees pray as a priest displays a holy relic of the Prophet Muhammad at the Hazratbal shrine on the occasion of a festival that commemorates the birthday of Prophet Muhammad in Srinagar, Indian-controlled Kashmir, Thursday, December 24, 2015. Thousands of Kashmiri Muslims gathered at the shrine, which houses a relic believed to be a hair from the beard of the prophet. (Photo by Mukhtar Khan/AP Photo)





People take pictures of the statue of Christ the Redeemer illuminated by Brazil-based French lighting designer Gaspare Di Caro reading “Merry Christmas” at the Corcovado hill in Rio de Janeiro, Brazil, on December 23, 2015. (Photo by Yasuyoshi Chiba/AFP Photo)





In this Tuesday, December 22, 2015 photo, Greg Olds adds blue food coloring to Santa's sleigh as he finishes creating a Christmas scene in his neighbor's front yard in Spokane, Wash. (Photo by Dan Pelle/The Spokesman-Review via AP Photo)